KDJ11-A CPU - Revision history

Jnc: /* Further reading */ +Compatible Bootstrap for the LSI-11/73

2024-08-01T19:02:41Z

‎Further reading: +Compatible Bootstrap for the LSI-11/73

Jnc: rm bloat

2023-07-02T19:05:58Z

rm bloat

Jnc: /* External links */ Narrow category

2022-10-11T20:30:09Z

‎External links: Narrow category

Jnc: /* External links */ +Manual, FMPS

2021-11-23T12:50:20Z

‎External links: +Manual, FMPS

Jnc: config jumpers

2020-05-20T23:03:00Z

config jumpers

Jnc: +links

2020-01-05T20:27:02Z

+links

Jnc: Proper cat

2018-02-17T15:41:23Z

Proper cat

Jnc: avoid redir

2016-09-17T14:59:28Z

avoid redir

Jnc: rm dup cat

2016-09-17T14:48:39Z

rm dup cat

Jnc: typo

2016-09-07T11:24:27Z

typo

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 | Out || Out || PC=configuration jumpers, PS=340
 |}
 ==External links==

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 * [http://www.bitsavers.org/pdf/dec/pdp11/1173/EK-KDJ1A-UG-002_KDJ11-A_CPU_Module_Users_Guide_2ed_Jun86.pdf KDJ11-A CPU Module User's Guide] (EK-KDJ1A-UG-002)
 * [http://www.bitsavers.org/pdf/dec/pdp11/1173/MP01890_KDJ11-A_Jan84.pdf KDJ11-A Field Maintenance Print Set] (MP01890-01)
 [[Category: PDP-11 QBUS Processors]]

← Older revision		Revision as of 20:30, 11 October 2022
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	{{PDP-11}}		{{PDP-11}}

−	[[Category: PDP-11 ~~Processors]]~~	+	[[Category: PDP-11 QBUS Processors]]
−	~~[[Category:~~ QBUS Processors]]

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 A limited amount of configuration can be done with a set of nine jumpers (in the middle of the card).Their functions are:
-{| border=1
+{| class="wikitable" | border=1
 ! Jumper !! Function !! In || Out
 |-
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 Powerup options are:
-{| border=1
+{| class="wikitable" | border=1
 ! W3 !! W7 !! Action
 |-
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 | Out || Out || PC=configuration jumpers, PS=340
 |}
 {{PDP-11}}

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-[[Image:KDJ11-A.jpg|150px|thumb|right|KDJ11-A CPU]]
+[[Image:KDJ11-A.jpg|200px|thumb|right|KDJ11-A CPU]]
-The '''KDJ11-A''' CPU board (M8192) is the first [[QBUS]] [[CPU]] card using the [[J-11 chip set]] of the [[PDP-11]]. It is a [[DEC card form factor|dual-height]] board, and was used to upgrade [[PDP-11/23]] systems. (Confusingly, no DEC 'PDP-11/xx' system is specified as using the KDJ11-A.)
+The '''KDJ11-A CPU''' board (M8192) is the first [[QBUS]] [[PDP-11]] [[Central Processing Unit|CPU]] card using the [[J-11 chip set]]. It is a [[DEC card form factor|dual-height]] board, and was used to upgrade [[PDP-11/23]] systems. (Confusingly, no DEC 'PDP-11/xx' system is specified as using the KDJ11-A.)
-It contains an 8K-byte write-through cache (set size 1, block size 1 16-bit word), protected by parity; cache control logic inspects [[DMA]] transfers and invalidates cache entries for memory which is written to by a device.
+It contains an 8K-byte write-through [[cache]] (set size 1, block size 1 16-bit word), protected by [[parity]]; cache control logic inspects [[Direct Memory Access|DMA]] transfers on the QBUS and invalidates cache entries for [[main memory]] which is written to by a [[peripheral|device]].
-It also provides a set of diagnostic [[LED]]s, and a Line Time Clock; but no other devices (boot PROM, serial line, etc).
+It also provides a set of diagnostic [[Light Emitting Diode|LED]]s, and a [[line time clock]]; but no other devices (boot [[PROM]], [[serial line]], etc). Both the LTC, and its control [[register]], are enabled by a single configuration [[jumper]] (below).
 Although the J-11 does implement [[FP11 floating point|FP11]] floating-point, the board can also use the optional [[FPJ11 floating point accelerator]] [[integrated circuit|chip]]; note that only the -YB version of the board operates correctly with the FPJ11.
 {{PDP-11}}

← Older revision		Revision as of 15:41, 17 February 2018
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	{{PDP-11}}		{{PDP-11}}

−	[[Category:QBUS ~~processors~~]]	+	[[Category: PDP-11 Processors]]
		+	[[Category: QBUS Processors]]

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 Although the J-11 does implement FP11 floating-point, the board can use the FPJ11 Floating Point Accelerator (note that only the -YB version of the board operates correctly with the FPJ11).
-{{stub}}
+{{PDP-11}}
 [[Category:QBUS processors]]